Yielding release for crusher bowls



Aug. 23, 1932. E. B. sYMoNs YIELDING RELEASE FOR CRUSHER BOWLS FiledAug. 5. 1931 2 Sheets-Sheet 1 ffzwn fw afyaf @www y JM @in Aug. 23,1932. E. B. sYMoNs YIELDING RELEASE FOR CRUSHER BOWLS Filed Aug. 5, 19512 Sheets-Sheet 2 E/U gg lf/ rE40 /2 Patented Aug. 23, 1932 UNITED STATESPATENT OFFICE EDG-AR IB. SYMONS, OF HOLLYWOOD, CALIFORNIA, ASSIGNOR TONORDBEBG- MANUFAC- TUBING CO., OF MILWAUKEE, WISCONSIN', A CORPORATION0F WISCONSIN YIELDlN G RELEASE FOR CBUSHER BOWLS Application led August5, 1931. Serial No. 555,215.

My invention relates to an improvement in crushing machines and has forone object the provision of an improved yielding release for the bowl orconcave of a ratory crusher. Another object is the provision of improvedyielding means for normally holding the bowl fixed in redeterminedcrushing position. Other objects will appear from time to time in thecourse of the specification and claims.

The invention is more or less diagrammatically indicated in theaccompaying drawings, wherein Figure 1 is a vertical section;

Figure 2 is a partial elevation; and

Figure 3 is a detail of a spring abutment segment.

Like parts are indicated by like symbols throughout the specificationand drawings.

Referrin to the figures, A generally indicates a fixe main frame for thecrusher. Its upper edge is provided with an outwardly projecting iangeA1, the opposite sides of which are bevelled or inclined as at A2 A3.

. B generally indicates a shaft, on the upper end of which is mounted a'crushing head or cone B1 having an outer generally conic surface B2. Thesupporting means for the cone and shaft are omitted from the presentdrawings, since they do not of themselves form part of the presentinvention.

It will be understood that any suitable means may be employed forsupporting and gyrating the shaft and head. B3 indicates a crushingmantle positioned upon the head B1. It may be held in position as by thesleeve B* and the locking member B5. The details of the locking meansare omitted, since they do not of themselves form part of the presentinvention.

C generally indicates a bowl supporting ring which is positioned uponthe flange A1. It is provided with a concavity generally indicated asC1, which receives the Han e A1, and which has inclined surfaces C2 3opposed to the corresponding surfaces A2 A3 of the flange A1. The memberC is provided with an internally screwthreaded portion C1.

D generally indicates the bowl structure proper, which may include anouter generally cylindrical portion D1l screwthreaded to mesh with thescrewthreading C4, as at D2. Any sultable means may be employed forimpart- 1ng relative rotation to the members C and D, whereby to effectvertical adjustment of the bowl structure D. D5 indicates a generallyconic inner wall of the bowl structure, herein shown as overhan 'ng thehead B1. The bowl liner D4 may e secured thereto in any suitable manneras by the lugs D5 engaged by the hooks or bolts D6 withthe adjustingshims D7 and the lock nuts D8.

It will be understood that in the normal use of the device, the bowlliner D4 is held normally fixed in the position in which it is shown,while the head, including the mantle B3, 1s gyrated to effect thecrushing action. In order, therefore, to hold the ring C normally lockedagainst the flange A1 in the osltion shown in Figure 1 I provide theollowing means. I may employ a number of bolts E1 E11 which pass throughapertures E1 E2 in the members A1 and C respectively. The bolts may beheaded or provided with nuts at top and bottom. It will be noted, vas inFigure 2, that the bolts E are arranged in two series. E10 indicatebolts having heads E11 at the lower ends. The bolts E10 project upwardlythrough the ring C and through the upper segments E", being providedwith upper nuts E12. Another set of bolts E14 are headed at the top asat E15, and project downwardly along the frame A, to support the lowersegments E5 by means of the nuts E4. The upper and lower segments areprovided with spring positioning abutments E16 and it will be noted fromFigure 2 that these abutments on the lower segments are aligned with theheads E11 of the bolts E10, while the abutment E16 of the upper segmentsE6 are aligned with the bolt heads E15. The bolts E1o and E14 alternate,so that the springs E17 E16 of each series are alternately positioned bybolts passing through them and by the spring abutments E11 E1s and E15En;l

G indicates an upper housing which may be positioned upon the member Cwithin the upper springs E1". Preferably it extends above the topsegments E5. The member G,

therefore, serves as a guide for the upper segments B6 and the springsE18, preventing any substantial lateral movement thereof. Similarly themain frame A serves as a guide for lie lower segments Et5 and the lowersprings In the use of the presentl device, the upper and lower sets ofsprings are of sufiicient strength to hold the ring C, and thus thecrushing liner D4, normally fixed in crushing position. In case trampiron or other uncrushable material penetrates the crushing zone, thesprings will permit the entire bowl structure, including the ring C, totilt upwardly to permit the passage of the uncrushable material 0r toprevent the breakage of the crusher.

It will be realized that whereas I have described and shown a practicaland operative device, nevertheless many changes may be made in size,shape, number and disposition of parts without departing from the spiritof my invention.v I, therefore, wish my drawings to be taken as in abroad sense illustrative and diagrammatic rather than as limiting me tothe precise details of the present showing.

I claim:

. 1. In a gyratory crusher, a xed circumferential frame member, acrushing head and means for gyrating it, a bowl surrounding the head,supporting means for the bowl tiltably mounted upon the upper edge ofthe frame member, and yielding means for holding said supporting meansnormally fixed in relation to said frame, said means including a set ofsprings positioned above said supporting means and a set of springspositioned below said supporting means, abutment members confining theupper and lower ends respectively of said sets of springs, andcompression members, extending respectively upwardly and downwardly fromsaid bowl supporting means in securing relationship with the upper andlower abutment members respectively.

A 2. In a gyratory crusher, a fixed circumferential frame member, acrushing head and means for gyrating it, a bowl surrounding the head,supporting means for the bowl tiltably mounted upon the upper edge ofthe frame member, and yielding means for holding said supporting meansnormally fixed in relation to said frame, said means including a set ofsprings positioned above said supporting means and a set of springspositioned below said supporting means, abutment members confining theupper and lower ends respectively of said sets of springs, andcompression members, extending respectively upwardly and downwardly fromsaid bowl supporting means in securing relationship with the upper andlower abutment members respectively, said compression members includingheaded bolts, the heads of said bolts being adapted to serve as springpositioning abutments.

3. In a gyratory Crusher, a fixed circumferential frame member, acrushing head and means for gyrating it, a bowl surrounding the. head,supporting means for the bowl tiltably mounted upon the upper edge ofthe frame member, and yielding means for holding said supporting meansnormally fixed in relation to said frame, said means including a set ofsprings positioned above said supporting means and a set of springspositioned below said supporting means, abutment members confining theupper and lower ends respectively of said sets of springs, andcompression members, extending respectively upwardly and downwardly fromsaid bowl supportingmeans in securing relationship with the upper andlower abutment members respectively, the upwardly extending anddownwardly extending compression members alternating.

4. In a gyratory Crusher, a fixed circumferential frame member, acrushing head and means for gyrating it, a bowl surrounding the head,supporting means for the bowl tiltably mounted upon the upper edge ofthe frame member, and yielding means for holding said supporting meansnormally fixed in relation to said frame, said means lncluding a set ofsprings positioned above said supporting means and a set of springspositioned below said supporting means, abutment members confining theupper and lower ends respectively of said sets of springs, andcompression members, extending respectively upwardly and downwardly fromsaid bowl supporting means in securing relationship with the upper andlower abutment members respectively, the upwardly extending anddownwardly extending compression members alternating, each suchcompression member including a headed bolt, said bolt heads beingadapted to serve as spring positioning abutments for springs of one set,the bodies of the bolts being adapted to serve as spring aligning meansfor spring of' the other set, the heads of the upwardly extending boltsabutting against the frame member, the heads of the downwardly extendingbolts abutting against the bowl.

5. In a gyratory crusher, a normally fixed circumferential frame member,a crushing head within said frame member and means for gyrating it, abowl, surrounding said head, said bowl being tiltably positioned uponthe upper edge of the frame member, the frame member being provided witha flange outwardly extending about its upper edge, the bowl including aportion overlying said flange, and yielding means for holding the bowlnormally fixed in relation to the frame, said means including a lowerset of springs positioned about the frame member and vertically alignedbeneath the fiange,

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and an upper set of springs vertically aligned with the lower set ofsprings and positioned above the portion of the bowl which overlies theflange, abutment means for the upper ends of the upper springs and forthe lower ends of the lower springs, and compression members therefor,the compression e members for the lower set of springs connecting theoverlying portion of the bowl with the lower abutment means, thecompression members for the upper set of springs connecting the flangeof the frame with the upper abutment means.

6. In a gyratory crusher, a normally fixed circumferential frame member,a crushing head within said frame member and means for gyrating it, abowl surrounding said head, said bowl being tiltably positioned upon theupper edge of the frame member, the frame member being provided with aiange outwardly extending about its upper edge, the bowl including aportion overlying said ange, and yielding means for holding the bowlnormally fixed in relation to the frame, said means including a lowerset of springs positioned about the frame member and vertically alignedbeneath the flange, and an upper set of springs vertically aligned withthe lower set of springs and positioned above the portion of the bowlwhich overlies the flange, abutment means for the upper ends of theupper springs and for the lower ends of the lower springs, andcompression members therefor, the compression members for the lower setof springs connecting the overlying portion of the bowl with the lowerabutment means, the compression members for the upper set of springsconnecting the flange of the frame with the upper abutment means, saidcompression members being headed, the heads ofthe compression membersfor each set of springs being adapted to serve as spring positioningabutments for the adjacent ends of the sp-rings of the opposite set.

7. In a gyratory crusher, a normally fixed circumferential frame member,a crushing head within said frame member and means for gyrating it, abowl. surrounding said head said bowl being tiltably positioned upon theupper edge of the frame member, the frame member being provided with 'aflange outwardly extending about its upper edge, the bowl including aportion overlying said flange, and yielding means for holding the bowlnormally fixed in relation to the frame, said means including a lowerset of springs positioned about the frame member and vertically alignedbeneath the flange, and an upper set of springs vertically aligned withthe lower set of springs and positioned above the portion of the bowlwhich overlies the flange, generally circular abutment means for theupper ends of the upper springs and for the lower ends of the lowersprings, and compression members therefor, the compression members forthe lower set of springs connecting the overlying portion of the bowlwith the lower abutment means, the compression members for the upper setof springs connecting the iange of the frame with the upper abutmentmeans, the frame being adapted to serve as a guide for the lower set ofsprings and the lower abutment means, and an additional housing member,positioned above the bowl, adapted to serve as a guide for the upper setof springs and the upper abutment means.

Signed at Hollywood, county of Los Angeles and State of California, this24th day of July, 1981.

EDGAR B. SYMONS.

